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The AAVSO International Database is a repository of variable star observations contributed by amateur and professional astronomers worldwide. Use the form below to search for observations of specific stars or by specific observers.

Enter list of star names, comma separated.
Enter a date in natural language, jd, or utc format.
Enter a date in natural language, jd, or utc format.
Separate multiple observers with commas.
Campaign overrides targets and dates.

Found 523 records

# Target Observer Julian Date UTC Date Magnitude Uncertainty Band Type
1 HL Tau LPAC 2458434.7453 2018-11-12 05:53 14.788 0.056 Johnson V CCD
2 XZ Tau LPAC 2458434.7453 2018-11-12 05:53 13.520 0.020 Johnson V CCD
3 XZ Tau LPAC 2458434.7445 2018-11-12 05:52 13.397 0.018 Johnson V CCD
4 HL Tau LPAC 2458434.7445 2018-11-12 05:52 14.783 0.058 Johnson V CCD
5 HL Tau LPAC 2458434.7437 2018-11-12 05:50 14.911 0.071 Johnson V CCD
6 XZ Tau LPAC 2458434.7437 2018-11-12 05:50 13.432 0.019 Johnson V CCD
7 XZ Tau PALE 2458434.7113 2018-11-12 05:04 12.277 0.003 Cousins R CCD
8 HL Tau PALE 2458434.7113 2018-11-12 05:04 13.660 0.011 Cousins R CCD
9 XZ Tau PALE 2458434.7078 2018-11-12 04:59 13.476 0.007 Johnson V CCD
10 HL Tau PALE 2458434.7078 2018-11-12 04:59 14.767 0.019 Johnson V CCD
11 XZ Tau PALE 2458434.7042 2018-11-12 04:54 14.538 0.015 Johnson B CCD
12 XZ Tau PALE 2458434.7007 2018-11-12 04:48 12.274 0.003 Cousins R CCD
13 HL Tau PALE 2458434.7007 2018-11-12 04:48 13.695 0.010 Cousins R CCD
14 HL Tau PALE 2458434.6971 2018-11-12 04:43 14.694 0.020 Johnson V CCD
15 XZ Tau PALE 2458434.6971 2018-11-12 04:43 13.462 0.007 Johnson V CCD
16 XZ Tau PALE 2458434.6936 2018-11-12 04:38 14.526 0.018 Johnson B CCD
17 XZ Tau PALE 2458434.6900 2018-11-12 04:33 12.245 0.003 Cousins R CCD
18 HL Tau PALE 2458434.6900 2018-11-12 04:33 13.692 0.008 Cousins R CCD
19 XZ Tau PALE 2458434.6865 2018-11-12 04:28 13.501 0.008 Johnson V CCD
20 HL Tau PALE 2458434.6865 2018-11-12 04:28 14.726 0.023 Johnson V CCD
21 HL Tau PALE 2458434.6829 2018-11-12 04:23 16.054 0.051 Johnson B CCD
22 XZ Tau PALE 2458434.6829 2018-11-12 04:23 14.554 0.014 Johnson B CCD
23 XZ Tau PALE 2458434.6757 2018-11-12 04:12 14.540 0.014 Johnson B CCD
24 HL Tau DEY 2458434.5954 2018-11-12 02:17 16.111 0.292 Johnson B CCD
25 XZ Tau DEY 2458434.5954 2018-11-12 02:17 14.477 0.067 Johnson B CCD